Finish converting the "Tip of the Day" dialog and the New File Hierarchy

[David Hampton]

Log Message:
-----------
Finish converting the "Tip of the Day" dialog and the New File
Hierarchy druid over to storing data in gconf.

Tags:
----
gnucash-gnome2-dev

Modified Files:
--------------
    gnucash:
        ChangeLog
    gnucash/src/app-utils:
        prefs.scm
    gnucash/src/gnome:
        druid-hierarchy.c
        druid-hierarchy.h
        gw-gnc-spec.scm
        top-level.c
    gnucash/src/gnome/schemas:
        apps_gnucash_dialog_common.schemas
    gnucash/src/gnome-utils:
        preferences.glade
    gnucash/src/scm:
        main.scm